The sprinkling of water slightly reduces the temperature of a closed room because(a) temperature of water is less than that of the room(b) specific heat of water is high(c) water has large latent heat of vaporisation(d) water is a bad conductor of heat
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water has large latent heat of vapourisation
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Answer:
C) Water has large latent heat of vaporisation
Explanation:
Water has a latent heat of vaporization of 540 calories per gram, this being the amount of heat energy that is necessary to convert 1 g of liquid water at 100°C to steam at 100°C., thus the molecules in water are closely held together by strong hydrogen bonds. When it is sprinkled over a large area, its vaporisation occurs which, in turn, causes cooling. The sprinkling of water slightly reduces the temperature of a closed room because, water has a large latent heat of vaporisation.
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